Plane-cap.



, C. BODMER & J..M. BURDIGK.

` PLANE GAP.

APPLICATION FILED MAY 5, 1913. 1,069,669.

Patented Aug. 12, 1913.

2 SHEETS-SHEET 1.

COLUMBIA PLANQGRAPH co.. wASmNG'roN C. BODMER & J. M. BURDIGK.

PLANE GAP.

A APPLICATION FILED MAY5. 1913.

Y mm 5 mm ws 0 fw a CHRISTIAN BOOMER AND JAMES IVI. BURDIC-K, OF NEWIELRI'IAIN,r CONNECTICUT, AS- SIGNORS TO THE STANLEY RULE & LEVELCOMPANY, OF NEW BRITAIN, CONNECTI- CUT, A CORPORATION 0F CONNECTICUT.

PLANE-CAP.

To all whom it may concern Be it known that we, CHRISTIAN BODMER andJAMES M. BURDIGK, citizens of the United States, residing at NewBritain, county of Hartford, State of Connecticut, respectively, haveinvented certain new and: useful Improvements in Plane-Caps, of whichthe following is a full, clear, and eX- act description.

This invention relates to improvements in the construction of planes andis more particularly concerned with cap pieces for the cutters or planeirons thereof of the type shown in our prior U. S. Patent No. 1,053,274,dated February 18, 1913.

The present invention aims to provide a cap piece of the general t-ypeshown in this prior patent, but embodying specific structuralimprovements. s

A preferable embodiment of our `improved form of cap piece isillustrated in the accompanying drawings in which- Figure 1 is alongitudinal sectional view through a standard type of plane equippedlwith the cap piece of the present invention. Fig. 2 shows a longitudinalsection through the palm rest and base sections, detached. Fig. 3 is aview in elevation of the cam lever. Fig. 4 is a bottom plan view of thebase plate. Fig. 5 shows a side elevation, partly7 in section, of amodified form of cap piece, said cap piece being removed from the planeand the parts being shown in cutter clamping position. Fig. 6 is alongitudinal section of the palm rest section thereof, detached. Fig. 7shows the base plate section thereof in longitudinal section and bottomplan. Fig. 8 is a detail of the clamping lever and its roller.

Referring to the drawings: numeral 1 designates the body of a plane ofthe channel type provided with side walls 2 and a detachable shoe 3 atthe forward end thereof, the usual throat 1a being formed adjacent theforward end of the plane.

4 is a frog or seat for the forward end of the plane iron or cutter.l

5 designates an interiorly threaded boss projecting upwardly fromthepplane body and carrying what is commonlyv termed a v cap screw 6,provided with the usual headed end 6a.` An adjusting lever 10 has itsforward end seated over the boss 5 and is provided with` an adjustinghea-d 10a, A

Specification of Letters Patent.

Application filed May 5, 1913.

Patented Auna 12,1913.

Serial No. 765,441.

second adjusting device is shown in the form of a lever member 8pivotally mounted on the plane body and engaged at its rear end by anadjusting nut 9.

7 designates a plane iron or cutter proyided with the usual longitudinalslot therein, this cutter being seated on the body of the plane with itsforward end resting on the seat 4, and its cutting edge projecting intothe throat 1a, the intermediate portions of the cutter restingrespectively over the boss 5 and the end of the adjusting lever S. Theadjusting head 10'r1 of lever 10 seats within the slot of the cutter. Itwill be, of course, understood that this slot is such as to enable thecutter to be seated on the plane body as 'described with the cap screw 6projecting through the slot therein. We lay no claim to the specificstructure of such a plane, inasmuch as it merely represents a standardtype of plane with which the cap piece forming the subject matter of thepresent invention may be utilized. This cap piece embodies a base plate11 having a curved forward end shaped to engage the forward end of thecutter resting on the seat 4, this base rearwardly of its curved endbeing provi-ded with side flanges 12 preferably curving inwardly as seenin Fig. 4. Centrally of the base and intermediate the side llanges is akey-hole slot 13. Intermediate this key-hole slot and its rear end, thisbase plate is provided with a second and elongated slot 14 havinglateral enlargements 14a intermediate its ends. Coperating with thisbase member is a hollow convex cap 15 forming a palm rest, this palmrest section being hinged or pivoted to the base by means of a pivot pin16 which may extend transversely of the base and through the side walls12 at their forward ends. This palm rest section 15 is of sutlicientwidth to inclose between its sides the rearwardly extending flangedportion of the base member 11and in line with the narrow portion of thekey-hole slot 13 thereof, is provided with an aperture 17 formingtherewith an annular locking shoulder. 18 `designates a bracketextend-ing inwardly from the inner face of the palmY restrsection at apoint in lline with the forward end of the elongated slot 14 in the basemember. To this bracket is pivotally secured the forward end of aclamping cam lever 19 which is provided with a cam slot 2O thereinadjacent its rear or lower end, this cam slot having at its upper orforward end an angular oft'- set forming a locking shoulder 21. This camlever extends through the elongated slot 14 in the base and its end slot20 guides upon a roller 22 journaled in the fianges 12 of the base andpositioned within the lateral enlargement 141:2* of the elongated slot.

lVith the foregoing description in mind, it will be evident that in use,the plane cutter having been seated on the plane body in the desiredposition, the base 11 is brought to bring the enlarged end of itskey-hole slot o-ver the head 6a of the cap screw and is then movedupwardly to bring the head of the cap screw above the narrow portion ofits key-hole slot, the palm rest section of the cap piece during thisoperation being held in the raised position indicated in dotted lines inFig. 1. lVhen this has been done, the palm rest section is then swungdownwardly toward the base member 11, this movement causing the camlever 19 to swing downwardly therewith to bring its lower edge intefrictional clamping engagement with the upper face of the cutter (or ofa clamping plate superposed thereon). This clamping action is effectedthrough the coperation of the cam slot 2O with the roller 22. When thepalm rest section has been moved downwardly relative to the basesufficiently far to clamp the cutter on its seat, the roller 22 willhave reached the upper or angularly offset end of the slot and will abutagainst the locking shoulder 21 formed thereby with the main body of thecam slot. At the same time, the aperture 17 at the forward end of thepalm rest section will have been brought about the head 6a of the capscrew. The edges of the palm rest adjacent said aperture being locatedat either side of said cap screw will prevent longitudinal movement f ofthe entire cap piece relative to the cap screw and plane body with whichit is rigid. The clamping engagement of the cam lever with the cutter issuch that it holds the latter tightly on its seat, and under ordinaryservice Condit-ions its position will be unchanged. The cutter, however,is always capable of being adjusted by the adjusting means providedwithout loosening the cap.

The frictio-nal engagement of the cam lever with the cutter ismaintained by reason of the engagement of the roller 22 with the lockingshoulder 21 of the cam slot which shoulder serves to lock the cap piecein cutter clamping position and against accidental displacement. When itis necessary to detach the entire piece, however, a sharp pull on thepalm rest section will move the shoulder 21 beyond the roller 22 andwill permit the palm rest section to be raised, this action withdrawingthe apertured forward end of the palm rest section from about the headof the cap screw so that the base may be moved relative to the cap screwto bring its head in alinement wit-h the enlarged end of itsV key-holeslot 13, whereupon the base plate 11 and the attached palm rest sectionmay be lifted from the plane body and from engagement with the capscrew.

In Figs 5 to 8, we have illustrated a modified form of cap pieceembodying the same general idea. 1n Figs. 5 and 7, 11a designates theforward curved end of the base member, and 12a the side flanges thereof,the

rear end of the base being preferably raised v somewhat as at 13a andhaving formed in the forward end of its flange portion a key-i hole slot13b, and adjacent its rear end and rearwardly of said key-hole slot, anelongated slot 15a. A hollow convex palm rest section 16a is pivoted atits forward end to the flanges 12CL and is provided at its forward endand at a point above the restricted end of the key-hole slot 15a with anaperture 17a providing the palm rest at that point with an annularlocking shoulder. From the under face of the palm rest section adjacentthe forward end of the slot 15a, a bracket 18a extends inwardly.Complemental links 19a are pivoted to this bracket and extend throughthe elongated slot 15a in the base member. The flanges 12a adjacenttheir rear ends are provided with complemental alined cam slo-ts 20a,these slots at their rear ends being` provided with annular extensionsor offsets forming locking shoulders 21a. The links 19a at theirrearends carry a clamp? ing roller 22a whose spindle 23a guides in thecam slots 20a, the width of these slots corresponding substantially tothe diameter of the spindle. The operation of this form is substantially"the same as that of the first form of the cap piece described. The basemember is seated on the cap screw and over the cutter in the same mannerand the palm rest section is moved downwardly relative thereto, thismovement moving the links 19 and their roller 22a downwardly, the camslots 2Oa guiding the roller 22a into frictio-nal clamping engagementwith the upper face of the cutter and the spindles 23a of this rollerseating at the end of its clamping roller in the offset extensions ofthese cam slots and engaging the locking shoulders to detachably lockthe cap 6 in clamping frictional engagement with the cutter.

While we have herein illustrated preferable embodiments of theinvention, it will, of course, be evident that the same is susceptibleof modification in structureV and relative arrangement of parts, withinthe spirit of the invention and the scope of the appended claims. l

What we claim, therefore, and..desire` to secure by Letters Patent is l.A cap piece for use in connection with plane bodies provided withabutment studs projecting upwardly from the cutter seats thereon,comprising a base adapted to be seated over a cutter, a palm restpivotally secured to said base, a clamping lever carried by one of saidparts, arranged upon movement of said palm rest relative to said base,to coperate with means carried by the other of said parts to therebyclamp a cutter on its seat, said clamping means including a cam on oneof said coperating parts having a locking shoulder thereon, and a membercarried by the other of said parts engaging said cam and arranged toengage said shoulder to lock said clamping lever in cutter clampingposition.

2. A cap piece for use in connection with plane bodies provided withabutment studs projecting upwardly from the cutter seats thereon,comprising a base adapted to be seated vover a cutter with its abutmentstud projecting therethrough, a palm rest pivotally secured to said baseand provided with a shoulder arranged to engage said stud upon relativemovementof said palm rest and base, a clamping lever carried by one ofsaid parts arranged, upon such relative movement, to coperate with meanscarried by the other of said parts to thereby move said lever to clamp acutter on its seat, said clamping means including a cam on one of saidcoperating parts having a locking shoulder thereon, and a member carriedby the other of said parts engaging said cam and arranged, upon suchrelative movement, to engage said shoulder whereby said clamping leveris detachably locked in cutter clamping position. 4

8. A cap piece for use in connection with plane bodies provided withabutment studs projecting upwardly from the cutter seats thereon,comprising a base adapted to be seated over a cutter, a palm restpivotally secured to said base, a clamping lever pivotally carried bysaid palm rest and guiding on said base, a .cam slot formed in one ofsaid parts, said slot having an offset therein Jforming a lockingshoulder, and a stud car* ried by the other of said parts engaging insaid cam slot and arranged upon movement of said palm rest relative tosaid base, to move said clamping lever into frictional clampingengagement with a plane cutter, said stud at the end of such clampingmovement, being positioned within said slot ofi"- set and against saidshoulder to thereby detachably lock said parts in counter clampingposition.

4. A cap piece for use in connection with plane bodies provided withabutment studs projecting upwardly from the cutter seats thereon,comprising a base adapted to be seated over a cutter with its abutmentstud projecting therethrough, a palm rest pivotally secured to said baseand provided with a shoulder arranged to engage said stud upon relativemovement of said palm rest and base, a clamping lever pivotally carriedby said palm rest and guiding on Said base, and arranged, upon suchrelative movement of the parts, to coperate with means carried by saidbase to clamp a cutter on its seat, said clamping means including a camslot formed in one of said parts and having an offset thereon providinga locking shoulder or abutment, and a stud carried by the other of saidparts engaging in said caln slot and arranged, upon movement of Saidpalm rest relative to said base, to move said clamping lever intofrictional clamping engagement with a plane cutter, Said stud engagingwith said shoulder or abutment at the end of such relative movement, todetachably lock said clamping lever in cutter clamping position.

CHRISTIAN BODMER. JAMES M. BURDICK.

Witnesses:

ALBERT YV. RITTER, PHILIP B. STANLEY.

Copies of this patent may be obtained for ve cents each,

by addressing the Commissioner of Patents.

Washington, D. C.

